Awesome!! You might want to look at picking up the .357 Sig barrel for it too, practice with the .40 carry the .357 sig..two guns in one same internals, springs, etc. I got my H&K Factory barrel from Cals Sporting Armory, another gun for 1/2 the price

that;s pretty cool that i can convert the barrel to different caliber, I will keep that in mind later on

still waiting for it

To my knowledge the USP Compact .40/.357 is the only model in the H&K line that will drop-in convert without making any other changes,
they're both the exact same except for the barrels and what's stamped on the slide.
(Of course H&K doesn't authorize caliber conversions changes because they want you to buy a 2nd $600 gun)